673808728320 has 864 divisors, whose sum is σ = 3020407353600. Its totient is φ = 134679822336.

The previous prime is 673808728279. The next prime is 673808728357. The reversal of 673808728320 is 23827808376.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19901166 + ... + 19934994.

Almost surely, 2^673808728320 is an apocalyptic number.

673808728320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673808728320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1510203676800).

673808728320 is an abundant number, since it is smaller than the sum of its proper divisors (2346598625280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673808728320 is a wasteful number, since it uses less digits than its factorization.

673808728320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33895 (or 33878 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 673808728320 in words is "six hundred seventy-three billion, eight hundred eight million, seven hundred twenty-eight thousand, three hundred twenty".